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Biology

Why is reproductive isolation required for speciation to occur?if populations can interbreed, they are considered one species.if populations can interbreed, they do not exchange genetic information.reproductive isolation is not required for speciation because most different species can interbreed.reproductive isolation is not required for speciation because species are not defined by reproduction

Ralph Lopez

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In three (3) sentences, explain the function of a vacuole in plant cells? im stuck bio isn't my subject :(

James Washington

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Geologist learn about Earth’s interior by studying ______, which move through Earth. a. seismic waves b. asthenosphere c. mantle d. lithosphere e. basalt f. granite g. core h. crust please answer fast and i will rate the brainliest

Nicholas Rivera

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Which of these statements is correct about the feature labeled A in the diagram?

Heather Maxwell

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Which type of environmental scientist is likely to study the interactions of gorillas? a. Hydrologistb. Toxicologist c. Environmental Veterinarian d. Ecologist

Deborah Edwards

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Umberto was referred to a/an who specializes in diagnosing and treating blood disorders.

Kaitlin Dean

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Which is a similarity between alcohol fermentation and aerobic respiration? Both require oxygen. Both require light energy. Both start with glycolysis. Both produce alcohol.

Melissa Norris

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Looking at a cell under a microscope, you note that it is a prokaryote. How do you know? (1 point) (a)The cell lacks cytoplasm. (b)The cell lacks a cell membrane. (c)The cell lacks a nucleus. (d)The cell lacks genetic material.

Jennifer Patterson

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In the body, hormones move from one location to another through _____.

Megan Page

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Total global precipitation is __________ total global evaporation. A)greater then B)less then C)equal to

Bethany Evans

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Which is a biological effect of the hydrogen bonding between molecules of water

Daniel King

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What is one result of meiosis? A. a larger organism B. identical daughter cells C. repair of damaged cells D. formation of gametes

Kevin Sutter

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1.Which of the following will occasionally produce a duplicate gene? A-chromosome replication during mitosis B-Crossing-over during meiosis C-neutral mutation during Transcription D-genetic drift during reproduction

Victoria Fowler

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Which of the following examples best illustrates sensory interaction? A. Julie loves chicken noodle soup, but her cold is making it taste bland. B. Michael was surprised to find that he likes the taste of rare steak. C. Alyssa loves the smell and taste of her mother’s homemade apple pie. D. Eli thought the fish smelled great but tasted awful.

Ralph Lopez

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The organisms native to an area will impact the types of soil found in that area.

Nicholas Rivera

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New ecosystems have been created by human land use

Kathy Robinson

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Which of the following scenarios is representative of parasitism? a. Tapeworms living in a mammal’s intestinal tract b. Remora fish attaching themselves to sharks c. Birds feeding on insects stirred up by grazing animals d. Birds eating scraps of food from a crocodile’s teeth

Jeremy Wood

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In Figure 33–6, what structure is labeled A? What is the role of the delicate network of capillaries that surrounds them?

Alexa Spicer

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Which of these proteins in mammals show only primary and secondary structures? A.)oxytocin. B.)keratin. C.)hemoglobin

Amanda Johnson

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Water vapor makes up what percentage of atmospheric gases

Cynthia Baker

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When a molecule of double-stranded DNA undergoes replication, it results in

Nicholas Rivera

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The major ingredient of magma is?

Kevin Sutter

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The populations of the great apes in Africa are recovering and on the rise. Please select the best answer from the choices provided a. True b. False

Chelsea Hayes

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Name four uses of energy produced by respiration.

Kathy Robinson

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The _________ of the cell directs cell activity and acts like the control center.

Ramon Kelly

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Which structure in this plant cell represents the site of ATP production from photosynthesis? mc012-1.jpg A B C D Download png

Kristi Hammond

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How does an early onset of spring through climate change affect plants? a. their growing and flowering season starts earlier and is longer b. their growing and flowering season starts later and is longer c. their growing and flowering season starts earlier and is shorter d. their growing and flowering season starts later and is shorter

Craig Stewart

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Populations of host organisms are most likely parasitized when _____. A. they are overcrowded B. they cannot escape C. they are diseased D. they have little to eat

Curtis Rhodes

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Which macromolecules are polymers made of nucleotides

Theresa Perry

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In algae and plants, photosynthesis happens in the A. vacuoles B. mitochondria C. chloroplasts D. chromosomes.

Ashley Howard

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Which of these are considered an oxidizing mutagenic agent? x–rays benzopyrene gamma rays

Carlton Burgess

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Biogenous sediment is made up of ____. ?

Heather Maxwell

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Which is most likely to help an introduced species become invasive? a low reproductive rate big difference between original and new habitats a strong predator in new habitat great tolerance to a wide range of conditions

Kathy Robinson

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Select all that apply. Which of the following are methods of molecular biotechnology? 0selective breeding 0recombinant DNA 0hybridization 0cloning 0induced mutations 0DNA profiling

Whitney Matthews

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The ________ is the layer of the atmosphere where electrified atoms are plentiful.

Blair Lewis

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How does a catalyst influence a chemical reaction? A.)It speeds up or slows down a chemical reaction by direct participation. B.)It reacts with products to increase the concentration of reactants. C.)It provides an alternative energy pathway for the reaction to proceed. D.)It increases the total amount of products formed.

Curtis Rhodes

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Peak bone mass typically occurs when a person is in his or her a. teens b. twenties c. thirties d. fifties

Donald Ward

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What happens when you increase a muscle’s endurance? A)The length and flexibility of the muscle is increased. B)The overall strength of the muscle is increased. C)The thickness and size of the muscle is increased. D)The length of time the muscle can contract without tiring is increased.

Kevin Sutter

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What is the primary purpose of writing a lab report

Jennifer Patterson

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Which factor explains why coal dust is explosive? temperature surface area concentration addition of catalyst

Curtis Rhodes

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Electrons are transferred in the formation of ______________ bonds. A) ionic B) covalent C) metallic D) all chemical

Kyle Mckinney

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Which discovery could provide evidence against the theory of evolution? A. primate and trilobite fossil in the same rock layer B. human gene in birds, fish, insects and plants C. a living whale with a basic hip bone structure D. bat fossil with a different limb structure than modern bats

Cynthia Baker

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Developing a (n)______ made absorption of nutrients more efficient for roundworms. Coelom,anus,or mouth

Rodney Fox

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The diagram shows the female reproductive system. What structure is indicated by the arrow?

Blair Lewis

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Why are cane toads in Australia considered an invasive species rather than simply nonnative? A.) They are destructive to native species and have no natural predators. B.) They reproduce more quickly than native species. C.) They have venom glands. D.) Large adult specimens are able to hunt snakes.

Bethany Evans

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Response to sign stimuli, or releasers, is generally based upon which of the following?

Karen Wright

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Toxins from seafood mushrooms and mold present the greatest potential for what kind of contamination

Cynthia Baker

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How does epithelial tissue help bruises and wounds?

Daniel King

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Bioflix activity: meiosis -- comparing mitosis and meiosis can you identify the similarities and differences between mitosis and meiosis? to review mitosis, watch this bioflix animation: mitosis. to review meiosis, watch this bioflix animation: meiosis. part a - two types of cell division drag the labels onto the grid to indicate the phases of mitosis and meiosis. use only pink labels for pink targets.

Jessie Thompson

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According to the pie chart, which cause results in the most extinctions? A.other B.introduced species C.habitat loss D.hunting and poaching

Kathy Robinson

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